package com.example.springsecurity.demo.service;

import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import java.util.Collection;

@Service
public class MyServiceImpl implements MyService{
    @Override
    public boolean hasPermission(HttpServletRequest request, Authentication authentication) {

        Object obj = authentication.getPrincipal();  //其实就是User
        if(obj instanceof UserDetails){
            UserDetails userDetails = (UserDetails)obj;
            Collection<? extends GrantedAuthority> authorities = userDetails.getAuthorities();  //拿到权限
            return authorities.contains(new SimpleGrantedAuthority((request.getRequestURI())));
        }
        return false;
    }
}